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    <title>Document</title>
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        div {
            width: 400px;
            height: 400px;
            /* 属性依次为：背景、背景图、不平铺 、水平朝下*/
            background: pink url(../测试.png) no-repeat center bottom;
            /* 位置设置默认舒徐为：水平、垂直 */
            background: pink url(../测试.png) no-repeat 100px 50px;
        }
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